SOPA is a horrible internet regulation law pushed by the copyright cartels that will destroy many of the freedoms on the Internet, such as the TOR project that anonymizes network traffic for activists in repressive countries.
Go Daddy supports SOPA. Therefore, if you care about Internet freedoms, you should probably move your accounts to another registrar. This link http://blog.jeffepstein.me/post/14629857835/a-step-by-step-guide-to-transfer-domains-out-of-godaddy describes how to do it in a painless manner. I'm moving my Go Daddy registrations to Network Solutions, where I already have an account.